Second trimester

By Mayo Clinic Staff

During the second trimester of pregnancy — from months 4 to 6 — some people feel better than they did in the first trimester.

Second trimester symptoms might include larger breasts, a growing belly and skin changes. During the second trimester, the fetus begins to move and hearing develops. Week 20 marks the halfway point of pregnancy.

Regular visits to your health care provider remain important during the second trimester. Tell your health care provider what's on your mind, even if it seems like it might not be important.

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Dec. 24, 2025

See also

  1. 1st trimester pregnancy: What to expect
  2. 2nd trimester pregnancy: What to expect
  3. 3rd trimester pregnancy: What to expect
  4. Antidepressants: Safe during pregnancy?
  5. Back pain during pregnancy: 7 tips for relief
  6. Bed rest during pregnancy: Get the facts
  7. Depression during pregnancy: You're not alone
  8. Epilepsy and pregnancy: What you need to know
  9. Fetal development: The 2nd trimester
  10. Fetal development: The 3rd trimester
  11. Fetal development: The first trimester
  12. Fetal presentation before birth
  13. Fetal ultrasound
  14. Heart conditions and pregnancy: Know the risks
  15. High blood pressure and pregnancy: Know the facts
  16. High-risk pregnancy: Know what to expect
  17. Iron deficiency anemia during pregnancy: Prevention tips
  18. Medicine concerns during pregnancy
  19. New Test for Preeclampsia
  20. Overdue pregnancy: What to do when baby's overdue
  21. Ovulation
  22. Placenta: How it works, what's normal
  23. Pregnancy and atrial fibrillation
  24. Pregnancy and COVID-19: What are the risks?
  25. Pregnancy and fish: What's safe to eat?
  26. Pregnancy and obesity: Know the risks
  27. Pregnancy diet: Focus on these essential nutrients
  28. Pregnancy due date calculator
  29. Pregnancy exercises
  30. Pregnancy nutrition: Foods to avoid during pregnancy
  31. Pregnancy stretches
  32. Pregnancy weight gain: What's healthy?
  33. Pregnant. Now What Happens?
  34. Prenatal care: First trimester visits
  35. Prenatal care: Second trimester visits
  36. Prenatal care: Third trimester visits
  37. Prenatal testing: Is it right for me?
  38. Prenatal vitamins: Why they matter, how to choose
  39. Rheumatoid arthritis: Does pregnancy affect symptoms?
  40. Sex during pregnancy: What's OK, what's not
  41. Twin pregnancy: Getting ready for twins or multiples
  42. Working during pregnancy: Do's and don'ts